83637201608 has 8 divisors (see below), whose sum is σ = 156819753030. Its totient is φ = 41818600800.

The previous prime is 83637201607. The next prime is 83637201619. The reversal of 83637201608 is 80610273638.

It can be written as a sum of positive squares in only one way, i.e., 82565424964 + 1071776644 = 287342^2 + 32738^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (83637201607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5227325093 + ... + 5227325108.

Almost surely, 2^83637201608 is an apocalyptic number.

It is an amenable number.

83637201608 is a deficient number, since it is larger than the sum of its proper divisors (73182551422).

83637201608 is a wasteful number, since it uses less digits than its factorization.

83637201608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10454650207 (or 10454650203 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 83637201608 in words is "eighty-three billion, six hundred thirty-seven million, two hundred one thousand, six hundred eight".